Discharging device of pressure filter

Abstract

The utility model provides an unloading device of a pressure filter, the pressure filter is provided with a filter fan and a frame body, the filter fan is rotatably arranged in the frame body, the unloading device of the pressure filter is used for unloading the filter fan, the unloading device of the pressure filter comprises a scraper, the scraper is provided with a connecting end and a free end which are oppositely arranged, the free end is hinged with the frame body, the scraper is movably arranged on one side of the filter fan; the adjusting assembly is fixedly connected with the free end of the scraper, and the adjusting assembly can move in the direction away from the filter fan so as to adjust the distance between the scraper and the filter fan or abut against the filter fan so that the distance between the scraper and the filter fan can be kept within a preset range; wherein the number of the scrapers and the number of the adjusting assemblies are both two, the two scrapers are arranged on the two sides of the filtering fan respectively, and the scrapers and the adjusting assemblies are arranged in a one-to-one correspondence mode. By means of the technical scheme, the problem that in the prior art, a filter fan of a pressure filter swings, and cooperation between a scraper and the filter fan is affected can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of raw coal washing, in particular to a pressure filter unloading device. Background Art

[0002] At present, in the washing of raw coal, coal slime usually needs to be filtered by a pressure filter to separate coal slime and coal slime water for different treatments. The filtering structure of the existing pressure filter usually includes a filter fan, gas is discharged from the upper part of the steam-water separator, and solid particles are collected on the filter fan to form a filter cake, and filtrate water is discharged from the lower filtrate. As the filter fan rotates, the filter cake is dried and precipitated, and then back-blown by high-pressure gas in the cake unloading area, and the filter cake on the filter fan is mechanically disturbed with the assistance of a scraper, and the filter cake is unloaded to the scraper, and collected by the scraper into the discharge device.

[0003] In a pressurized filter, a certain distance needs to be maintained between the scraper and the filter fan to ensure that there is no contact between the scraper and the filter fan, and to prevent the scraper from damaging the filter fan. However, in the prior art, due to installation accuracy and operating resistance, the filter fan will swing parallel to the filter fan's rotation axis during rotation, causing the distance between the scraper and the filter fan to change. When the filter fan is too close to the filter fan, it may damage the filter fan; when the scraper is too far away from the filter fan, the scraper may not contact the filter cake, causing the filter cake to pass directly through the gap between the scraper and the filter fan, seriously affecting the scraper unloading effect and efficiency, resulting in a decrease in the working efficiency of the pressurized filter. Utility Model Content

[0004] The utility model provides a pressurized filter unloading device to solve the problem in the prior art that the filter fan of the pressurized filter swings and affects the coordination between the scraper and the filter fan.

[0005] The utility model provides a pressurized filter unloading device, the pressurized filter comprises a filter fan and a frame, the filter fan is rotatably arranged in the frame, the pressurized filter unloading device is used for unloading the filter fan, the pressurized filter unloading device comprises: a scraper, the scraper has a connecting end and a free end which are relatively arranged, the free end is hinged to the frame, and the scraper is movably arranged on one side of the filter fan; an adjusting component, the adjusting component is fixedly connected to the free end of the scraper, the adjusting component can move in a direction away from the filter fan to adjust the distance between the scraper and the filter fan, or abut against the filter fan to keep the distance between the scraper and the filter fan within a preset range; wherein, both the scraper and the adjusting component are provided with two, the two scrapers are respectively arranged on both sides of the filter fan, and the scraper and the adjusting component are arranged in a one-to-one correspondence.

[0006] Furthermore, the adjustment component has a limiter, which is used to be fixedly connected to the free end of the scraper. A first elastic member is arranged between the two limiters, and the first elastic member is used to provide elastic forces towards the two first elastic members.

[0007] Furthermore, a second elastic member is provided between the two scrapers, and two ends of the second elastic member are respectively connected to the two scrapers for providing elastic forces towards each other to the two scrapers.

[0008] Furthermore, the elastic force of the second elastic member is equal to the elastic force of the first elastic member.

[0009] Furthermore, the limiting member is a follower wheel, and the adjusting assembly also has a wheel axle. The follower wheel is rotatably arranged on the wheel axle, and the rotation axis of the follower wheel is perpendicular to the rotation axis of the filter fan. When the follower wheel abuts against the filter fan, the follower wheel can rotate with the rotation of the filter fan, and the scraper is fixedly connected to the wheel axle.

[0010] Furthermore, a distance adjustment structure is provided between the scraper and the wheel shaft to adjust the distance between the scraper and the filter fan.

[0011] Furthermore, the distance adjustment structure comprises: a connecting rod, the connecting rod is arranged on the wheel axle, the extending direction of the connecting rod is the same as the axial direction of the filter fan, and the scraper is adjustably arranged on the connecting rod.

[0012] Furthermore, the pressure filter unloading device also has a support frame, the axle is movably arranged on the support frame, the follower wheel can drive the axle to move relative to the support frame, and a limiting structure is provided between the support frame and the axle to limit the movement of the axle relative to the support frame.

[0013] Furthermore, the follower wheel also has a support rod, which is arranged on the wheel axle. The limiting structure includes: a limiting block, which is arranged on the support frame, and the limiting block is provided with a limiting groove, and the support rod is movably arranged in the limiting groove.

[0014] Furthermore, there is a gap between the scraper and the end surface of the filter fan, and the minimum value of the gap is between 5-8 mm.

[0015] By applying the technical solution of the utility model, the filter fan of the pressure filter can rotate relative to the frame, and the scrapers arranged on both sides of the filter fan can mechanically disturb the filter cake on the filter fan during the rotation of the filter fan, so that the filter cake falls off. When the filter fan swings parallel to the axis due to installation accuracy or uneven load distribution during the rotation process, one of the adjustment components arranged on both sides of the filter fan will move with the filter fan under the push of the filter fan, and the other adjustment component can maintain contact with the filter fan. The distance between the two adjustment components and the filter fan is fixed. Because the hinged end of the scraper is hinged to the frame, and the free end is fixedly connected to the adjustment component, when the filter fan swings, the distance between the scrapers on both sides of the filter fan and the filter fan can remain unchanged, preventing the distance between the scraper and the filter fan from being too small, so that the scraper scratches the filter fan, or the distance between the scraper and the filter fan is too large, so that the scraper cannot scrape off the filter cake on the filter fan, so as to ensure the service life of the filter fan, improve the unloading effect and unloading efficiency of the scraper, and improve the working efficiency of the pressure filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 The schematic diagram of the structure of the scraper unloading device provided by the utility model is shown.

[0018] The above drawings include the following reference numerals:

[0019] 100. Filter fan;

[0020] 200, frame;

[0021] 10. Scraper;

[0022] 20. Adjustment components;

[0023] 21. Follower wheel;

[0024] 22. Axle;

[0025] 23. Connecting rod;

[0026] 24. Support rod;

[0027] 30. a first elastic member;

[0028] 40. a second elastic member;

[0029] 50. Support frame;

[0030] 51. Limit block; 511. Limit slot. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0032] like Figure 1 As shown, the embodiment of the utility model provides a pressurized filter unloading device, the pressurized filter has a filter fan 100 and a frame 200, the filter fan 100 is rotatably arranged in the frame 200, the pressurized filter unloading device is used to unload the filter fan 100, and the pressurized filter unloading device includes a scraper 10 and an adjustment component 20. The scraper 10 has a connecting end and a free end that are relatively arranged, the free end is hinged with the frame 200, the scraper 10 is movably arranged on one side of the filter fan 100, the adjustment component 20 is fixedly connected to the free end of the scraper 10, and the adjustment component 20 can move in a direction away from the filter fan 100 to adjust the distance between the scraper 10 and the filter fan 100, or abut against the filter fan 100 to keep the distance between the scraper 10 and the filter fan 100 within a preset range. Among them, there are two scrapers 10 and two adjustment components 20, and the two scrapers 10 are respectively arranged on both sides of the filter fan 100, and the scraper 10 and the adjustment component 20 are arranged one by one.

[0033] By applying the technical solution of the utility model, the filter fan 100 of the pressure filter can rotate relative to the frame 200, and the scrapers 10 arranged on both sides of the filter fan 100 can mechanically disturb the filter cake on the filter fan 100 during the rotation of the filter fan 100 to make the filter cake fall off. When the filter fan 100 swings parallel to the axis during rotation due to installation accuracy or uneven load distribution, one of the adjusting components 20 arranged on both sides of the filter fan 100 will move with the filter fan 100 under the push of the filter fan 100, and the other adjusting component 20 can maintain contact with the filter fan 100. The distance between the two adjusting components 20 and the filter fan 100 is fixed. Because the hinged end of the scraper 10 is hinged to the frame 200, and the free end is fixedly connected to the adjusting component 20, when the filter fan 100 swings, the distance between the scraper 10 on both sides of the filter fan 100 and the filter fan 100 can remain unchanged, preventing the distance between the scraper 10 and the filter fan 100 from being too small, so that the scraper 10 scratches the filter fan 100, or the distance between the scraper 10 and the filter fan 100 is too large, so that the scraper 10 cannot scrape off the filter cake on the filter fan 100, so as to ensure the service life of the filter fan 100, improve the unloading effect and unloading efficiency of the scraper 10, and improve the working efficiency of the pressurized filter.

[0034] Specifically in the present application, the adjustment component 20 has a limiter, which is used to be fixedly connected to the free end of the scraper 10, and a first elastic member 30 is arranged between the two limiters, and the first elastic member 30 is used to provide elastic forces in opposite directions to the two first elastic members 30. Through the above arrangement, the limiter can limit the minimum distance between the scraper 10 and the filter fan 100, and the first elastic member 30 is arranged between the two limiters to ensure that the limiters on both sides of the filter fan 100 can move synchronously with the filter fan 100, so as to limit the minimum distance between the scraper 10 and the filter fan 100 while limiting the maximum distance between the scraper 10 and the filter fan 100. In addition, by arranging the first elastic member 30, when there are large pieces of material on the filter fan 100, relying on the first elastic member 30, the distance between the scraper 10 and the filter fan 100 can be instantly increased, and then rebound, thereby improving the unloading effect of the scraper 10.

[0035] Furthermore, a second elastic member 40 is provided between the two scrapers 10, and both ends of the second elastic member 40 are respectively connected to the two scrapers 10 for providing elastic forces in opposite directions to the two scrapers 10. By providing the second elastic member 40, the second elastic member 40 can cooperate with the first elastic member 30 to improve the rebound effect of the scraper 10, improve the floating response speed of the scraper 10, and try to ensure that the scraper 10 can be kept at a minimum distance from the filter fan 100.

[0036] Specifically, the elastic force of the second elastic member 40 is equal to the elastic force of the first elastic member 30. Through the above arrangement, the scraper 10 and the stopper arranged on the same side can move synchronously, and the first elastic member 30 and the second elastic member 40 can provide the maximum elastic effect.

[0037] Specifically, the first elastic member 30 and the second elastic member 40 are both springs.

[0038] In some feasible embodiments of the present application, the limiting member is a follower wheel 21, and the adjustment component 20 also has an axle 22. The follower wheel 21 is rotatably arranged on the axle 22, and the rotation axis of the follower wheel 21 is perpendicular to the rotation axis of the filter fan 100. When the follower wheel 21 abuts against the filter fan 100, the follower wheel 21 can rotate with the rotation of the filter fan 100, and the scraper 10 is fixedly connected to the axle 22. Through the above arrangement, the distance between the axle 22 and the filter fan remains unchanged, which is the radius of the follower wheel 21. The free end of the scraper 10 is connected to the axle 22, which can ensure that the minimum distance between the scraper 10 and the filter fan 100 remains unchanged. The limiting member is set in the form of the follower wheel 21, which can make the limiting member and the filter fan 100 perform rolling friction cooperation, thereby reducing the wear of the limiting member on the filter fan 100.

[0039] Preferably, the follower wheel 21 is a rubber wheel to ensure that the follower wheel 21 can rotate along with the rotation of the filter fan 100 , thereby reducing the friction between the stopper and the filter fan 100 .

[0040] Furthermore, there is a distance adjustment structure between the scraper 10 and the axle 22 to adjust the distance between the scraper 10 and the filter fan 100. According to different production conditions, it is usually necessary to adjust the distance between the filter fan 100 and the scraper 10. In the present application, it is cumbersome to replace the limiter. By providing a distance adjustment mechanism between the scraper 10 and the axle 22, it is possible to easily adjust the distance between the scraper 10 and the filter fan 100, thereby improving the operating efficiency.

[0041] In some embodiments of the present application, the distance adjustment structure includes a connecting rod 23, the connecting rod 23 is arranged on the wheel shaft 22, the extension direction of the connecting rod 23 is the same as the axial direction of the filter fan 100, and the scraper 10 is adjustably arranged on the connecting rod 23. Through the above arrangement, the distance between the scraper 10 and the filter fan 100 can be adjusted by adjusting the position of the scraper 10 on the connecting rod 23, thereby improving the convenience of operation.

[0042] Specifically, a snap-fit ​​structure, such as a snap-fitting groove or the like, may be provided on the connecting rod 23 , wherein a plurality of snap-fitting grooves are arranged at intervals along the extension direction of the connecting rod 23 , and the scraper 10 is snap-fitted with the snap-fitting grooves at different positions to achieve adjustment of the position between the scraper 10 and the connecting rod 23 .

[0043] Specifically, the connecting rod 23 can also be set as a bolt, which is passed through the wheel axle 22 and is threadedly connected to the wheel axle 22 and the scraper 10. By adjusting the relative position of the bolt and the wheel axle 22, the distance between the scraper 10 and the filter fan 100 can be adjusted. Such a setting can improve the accuracy and convenience of adjustment and ensure the stability of the cooperation between the scraper 10 and the wheel axle 22.

[0044] Furthermore, the unloading device of the pressure filter also has a support frame 50, the wheel axle 22 is movably arranged on the support frame 50, the follower wheel 21 can drive the wheel axle 22 to move relative to the support frame 50, and a limiting structure is provided between the support frame 50 and the wheel axle 22 to limit the movement of the wheel axle 22 relative to the support frame 50. By providing the limiting structure, the moving range of the follower wheel 21 can be limited, and the follower wheel 21 is prevented from excessively moving in a direction away from the filter fan 100, and the scraper 10 is prevented from being too far away from the filter fan 100. The two scrapers 10 take a long time to reset through the first elastic member 30 and the second elastic member 40, and part of the filter cake cannot be separated from the filter fan 100 under the disturbance of the scraper 10, so as to ensure the unloading effect of the scraper 10.

[0045] In a specific embodiment of the present application, the follower wheel 21 is further provided with a support rod 24, and the limiting structure includes a limiting block 51, the limiting block 51 is provided on the support frame 50, the limiting block 51 is provided with a limiting groove 511, and the support rod 24 is movably provided in the limiting groove 511. Through the above arrangement, the two ends of the limiting groove 511 that are relatively arranged along the axis direction of the filter fan 100 can limit the displacement of the support rod 24, so as to limit the displacement of the wheel shaft 22.

[0046] Specifically, there is a certain distance between the side wall of the support rod 24 and the inner wall of the limiting groove 511 along the direction perpendicular to the axis of the filter fan 100. In this way, the limiting groove 511 will not limit the swing of the follower wheel 21 and the wheel axle 22, preventing the limiting groove 511 from interfering with the movement of the limiting member.

[0047] Specifically in the present application, there is a gap between the scraper 10 and the end face of the filter fan 100, and the minimum value of the gap is between 5-8mm. When the minimum distance between the scraper 10 and the end face of the filter fan 100 is less than 5mm, the distance between the scraper 10 and the filter fan 100 is too small, and the surface of the filter fan 100 may be partially protruding after long-term use, and the scraper 10 may scratch the filter fan; when the minimum distance between the scraper 10 and the end face of the filter fan 100 is greater than 8mm, the distance between the scraper 10 and the filter fan 100 is too large, and when the filter cake thickness is small, the scraper 10 may not be able to contact the filter cake, affecting the unloading effect of the scraper 10. The present application sets the minimum value of the gap between the scraper 10 and the end face of the filter fan 100 to between 5-8mm, which can ensure the service life of the filter fan 100 and the unloading effect of the scraper 10. Specifically, the minimum value of the gap can be set to 5mm, 6mm, 7mm or 8mm.

[0048] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0049] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0050] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0051] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0052] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0053] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A pressure filter unloading device, characterized in that: The pressure filter comprises a filter fan (100) and a frame (200), wherein the filter fan (100) is rotatably arranged in the frame (200), and the pressure filter unloading device is used to unload the filter fan (100), and the pressure filter unloading device comprises: A scraper (10), the scraper (10) having a connecting end and a free end that are arranged opposite to each other, the free end being hinged to the frame (200), and the scraper (10) being movably arranged on one side of the filter fan (100); an adjusting component (20), wherein the adjusting component (20) is fixedly connected to the free end of the scraper (10), and the adjusting component (20) can move in a direction away from the filter fan (100) to adjust the distance between the scraper (10) and the filter fan (100), or abut against the filter fan (100) to keep the distance between the scraper (10) and the filter fan (100) within a preset range; There are two of each of the scraper (10) and the adjustment assembly (20), and the two scrapers (10) are respectively arranged on both sides of the filter fan (100), and the scraper (10) and the adjustment assembly (20) are arranged in a one-to-one correspondence.

2. The pressure filter unloading device according to claim 1, characterized in that: The adjustment assembly (20) has a limiter, the limiter is used to be fixedly connected to the free end of the scraper (10), a first elastic member (30) is arranged between the two limiters, and the first elastic member (30) is used to provide elastic forces towards the two first elastic members (30).

3. The pressure filter unloading device according to claim 2, characterized in that: A second elastic member (40) is also provided between the two scrapers (10), and two ends of the second elastic member (40) are respectively connected to the two scrapers (10) for providing elastic forces towards each other to the two scrapers (10).

4. The pressure filter unloading device according to claim 3, characterized in that: The elastic force of the second elastic member (40) is equal to the elastic force of the first elastic member (30).

5. The unloading device of the pressure filter according to claim 2, characterized in that: The limiting member is a follower wheel (21). The adjusting assembly (20) further comprises a wheel axle (22). The follower wheel (21) is rotatably mounted on the wheel axle (22). The rotation axis of the follower wheel (21) is perpendicular to the rotation axis of the filter fan (100). When the follower wheel (21) abuts against the filter fan (100), the follower wheel (21) can rotate along with the rotation of the filter fan (100). The scraper (10) is fixedly connected to the wheel axle (22).

6. The unloading device for the pressure filter according to claim 5, characterized in that: A distance adjustment structure is provided between the scraper (10) and the wheel shaft (22) so as to adjust the distance between the scraper (10) and the filter fan (100).

7. The unloading device of the pressure filter according to claim 6, characterized in that: The distance adjustment structure comprises: A connecting rod (23), wherein the connecting rod (23) is arranged on the wheel shaft (22), the extension direction of the connecting rod (23) is the same as the axial direction of the filter fan (100), and the scraper (10) is adjustably arranged on the connecting rod (23).

8. The unloading device of the pressure filter according to claim 5, characterized in that: The pressure filter unloading device also has a support frame (50), the wheel axle (22) is movably arranged on the support frame (50), the follower wheel (21) can drive the wheel axle (22) to move relative to the support frame (50), and a limiting structure is provided between the support frame (50) and the wheel axle (22) to limit the movement of the wheel axle (22) relative to the support frame (50).

9. The unloading device of the pressure filter according to claim 8, characterized in that: The follower wheel (21) is also provided with a support rod (24), and the support rod (24) is arranged on the wheel axle (22). The limiting structure comprises: A limit block (51), wherein the limit block (51) is arranged on the support frame (50), the limit block (51) is provided with a limit slot (511), and the support rod (24) is movably arranged in the limit slot (511).

10. The unloading device of the pressure filter according to claim 1, characterized in that: There is a gap between the scraper (10) and the end surface of the filter fan (100), and the minimum value of the gap is between 5 and 8 mm.

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